"The Third Chimpanzee" is a book by Jared Diamond that explores the evolutionary relationship between humans and chimpanzees. It discusses how humans share 98% of their DNA with chimpanzees, highlighting the similarities in behavior, social structures, and communication. The book examines the implications of this close genetic relationship for understanding human nature and evolution. In addition to genetics, Diamond addresses the development of human culture, language, and technology. He argues that the unique traits of humans, such as complex societies and environmental impact, stem from our evolutionary past. The book encourages readers to reflect on what it means to be human in the context of our closest relatives.